peters



` Be-it known that we,;Dn GRASSE FowLER and GEORGEFOWLER, 1both ofthe town of character, and operationofthe same, 'referin which-f "machine, taken frcmthefront end,show

ter,l`showing fa section" `of all `the essential parts". `centric `or crankpin, (scen at B,\Fig. 1) o with *anfeccentriccircle, or` case, around it, `to vary the eccentricitypf `the motion. j o, POur improvement consists in the peculiar `manneryof connecting'` the operationof the `two levers to throw the machine out of gear "at the `precise timewhen the punch is at its ;l greatest Velevationwhich is the position for i puttingin, or taking out, the work. o

We `make. the mainframe, orbody A, A, =&c., of the machine, of `cast iron or any other suitable material, inthe usual way, substantially, of the form shown in Figs. 1 and`f2.` We lream the lioleforthe main shaft, tapering, as shown in sectionin Fig. `3so `as, to receive the main` shaft, B, with its several off-sets, as shownin section in Fig. 3. l.We make` this main shaft, B, large `at the front end to enable us, by the eccenfpunch, (which may beassisted by the eccentric circle, fu, Fig. 4); and the other parts smaller, to lessen friction,.weight, &c., while Vit retains sufficient strength to prevent trem-` J blin v f l e make the slide,`or gate, D, Figsal and `1 `3, of cast iron or other suitable material, and `have it slide in ways, a, and a, in the usual way, as shown in Fig. `1.

tise, ZJ, with parallel sides, in which we place DF, Gnassn FOWLERIAND.GnoaGErowLER, orgwALLINGroRD, CONNno'riou'r.`

fwnewvnsandf usefulllmprovement 'in Machines o for `Punching Metal, and we do herebyf jdeclare that the following is a full, clear, wand exact description` of lthe construction,

" ence being had tothe accompanying,draw-` ings which make'a `part of this specification,

\ i Figure 1 is a perspective view of thewhole ing themovementlofthe punch, its ladjust# Y ment,&c`. Fig; 2 is aperspective view of the same, `taken from p the rear end, showing o the apparatus for putting the punch in, and out ,1, ofgear, &c.` Fig. 3 isa view of alongitu--. v dinal section, cutyvertically through the cen Fig.` 4Q is a cross section of vthe ec-E f gear.

' tlric journal on its end, (as seen at C, Fig. 3) to give, sufficient vertical motion `to the o In the centrali, `part of this slide` we make an oblong mor PATENT onnion. l

" r MACHINE FOR runonine'` METAL.

i 1 i Specflhation `ofll'ietl-.ers Patentlio. 12,723, dated prl 17', 1855; Ressued August 24,

. a i L 1869,1\To.s,e17.`

the sliding square block, c, with a -round hole i j to receive the eccentric circle, o, Fig. hand `eccentric journal, C, Fig. 3, as shown` at B,

Fig. 1.V y

`We, make the-sliding block, c, so much shorter than the mortise, as to allow it to have sufiicient longitudinal mot-ion to .accommodate the eccentricity of the journal, even when enlarged by the eccentric-circle, o, whileit has no room to move in a vertical direction, so that t-hemotion of the eccentric `journal will give a `reciprocating motion to the slide, D, which corries the punch,` d Figs. 1, 2, and 3.

lTograduate the motion ofthe punch, so

that it may come down, at all times, to the exact point desired, we `use thin plates, of diiferent thicknesses, `which may be placed over, or under, the blockc, and changed at pleasure, as seen at c, and e, Figs. 1, and 3. 7e `inclose this block, plates, &c., with a plate,oa`s indicated, in section,.at L, Fig. 3. 7e fix thefemale die, f, in a suitable bed, in the.usual` way, as seenV at E, Figs. 1, 2, and 3. The dies may be changed,` or varied, at pleasure, to suit any kind of punching, or forming, of metal plates. The main shaft, B, is `supported in bearings at g, and h, Fig. 3. 'v

Back of the bearing, h, we X a permanent collet, F, which always revolves with the shaft, B. In the front side of this collet, we fix a stud, or projection, as seen at z', Fig. 1, which acts upon the upper end, y', of the lever, k, `to throw/the wheel out of Thisleverg 7a, works on a fulcrum screw, Z, Figs. 2 and 3,.and is held to its place by a spiral spring, m, when the ma* chine is in gear, while its lower end rests on the clutch lever, n, n, as seen in Fig. 2. And in the back, or rear side, of this collet,

F, we fix a stud, or projection, 0, Fig. 3,l

against the side of which the sliding rod, p, strikes, or presses, when the machine is in gear. I o o 7e place the fly-wheel, @with the loose socket, g, on the rear part of the shaft, B, so as to be turned freely upon it while the machine is out of gear. And, on this socket, g, wepflace the crank, H, (when a crank is used).l Between this wheel, G, and the crank, H,"and loose upon the socket, g, we place the clutch, r, which governs the sliding, or connecting, rod, 79, -aS shown in Figs.` 2 and 3. ,o This clutch, r, is" moved by the clutch lever, n, n, by means of pins or projections, working in a groove, at 1, Figs. 2 and 3. The clutch lever, n, fn, works on a fulcrum pin, s, in an inflexible arm, t, attached to the main bed of the frame, as shown in section in Fig. 3, and is wo-rked by the foot applied to the front end, at I, to put the machine in gear; and this front end, I, is drawn up by the spiral spring, K, Fig. 3, to throw the machine out of gear.

Having made and arranged the several parts of .the machine, as before described, we apply the power to the crank, H, (or, a band on the wheel, G, or otherwise,) and revolve the wheel, G, in the direction indicated by the dart, when it will revolve freely on .the shaft, B, without moving it; (the clutch, yr, being in the position indicated in Fig. The workman then places his foot on the end, I, of the clutch lever, n, n, when the upper end of the lever will force the clutch, 1", up against the nave of the wheel, Gr, as seen in Fig. 2, and the sliding rod, 70, will be protruded so as to come against the side of the stud, o, in the collet, F, and ther by revolve the shaft, B, which by means of the eccentric journal, C, F ig. 8, (with the eccentric circle, o, arranged as desired, to increase, or diminish, the eccentricity,) will depress, and elevate the punch, d.

When the lower end of the lever, n, n, is depressed so as to put the machine in gear, the lower end of the lever, 7c, by the action of the spiral spring, m, Fig. 2, will be drawn over and upon the lever, n, n, so as to rest upon it, as shown in Fig. 2, and thus keep the machine in gear until the punch has operated on the material to be punched, &c. and has been again elevated to its highest position, when the stud, or projection, z', Fig. l, acting on the upper end of the lever, la, will force the lower end off of the lever, fn, n, and the spiral Spring K, Fig. 3, will draw up the end, I, of the lever, n, n, and force back the clutch, r, to the position shown in Fig. 3, when the rod, p, will not reach the stud, 0, and therefore the machine will be out of gear, the punch resting at its highest elevation, and the lower end of the lever, 7c, resting against the side of the lever, a, fn, as shown in section in Fig. 8.

Should it be desired to keep the machine in gear for a number of operations in succession, the end, I, of the lever, n, n, may be held down by the foot, or any other power, greater than that of the spiral spring, K.

What we claim as our invention, and desire to secure by Letters Patent, is-

The peculiar manner of connecting the operation of the two levers, (n, n, and 70,) to throw the machine out of gear at the time when the punch is at its greatest elevation, when constructed, arranged, and made to operate, substantially, in the manner herein described.

DE GRASSE FOWLER. GEORGE FOVVLER.

lllitnesses SAMUEL THOMPSON, R. FITSGERALD.

[FIRST PRiN'rED 1913.] 

